Teen Wolf Vet Colton Haynes Joins Arrow

TV Guide:
Ya might wanna sit down for this one, Arrow fans. TV Guide Magazine has learned exclusively that the CW show — which is already exceeding its hot limit with Stephen Amell, Katie Cassidy and Colin Donnell — has just hit a major bull's eye by signing Teen Wolf alum Colton Haynes.

"We were big fans of Colton from Teen Wolf and we are thrilled he's joining Arrow," says executive producer Greg Berlanti of the actor, who is set to begin appearing on the show in 2013 as none other than Roy Harper.